Marking device



July 7, 1936. c. R. LINDHOLM MARKING DEVICE Filed Sept. 12, 1934 Patented July 7, 1936 PATENT oFFisE MARKING DEVICE Courtney R. Lindholm, to Independent Die St. Louis, Mo., assignor and Supply Company, St.

' Louis, Mo., a corporation of Missouri Application September 12, 1934, Serial No. 743,703

1 Claim.

This invention relates generally to marking devices for tracing outlines upon the parts of shoe uppers, and particularly to a die for such apparatus.

Sections of shoe upper material which are to have'portions cut out, or which are to be stitched to other parts, are frequently marked or inked along the lines which are to be cut out or followed so that the operative, when performing the operations upon these sections of upper material, will be guided as to the lines which are to be followed. iApparatus for s6 marking .or tracing sections of upper material is ordinarily provided with a number of dies, each having differently configurated marking edges whereby to trace different configurations upon the sections of upper material.

An object of the present invention, generally stated is to provide a die for a marking machine of the character referred to, and particularly to provide a device for connecting the die to the cooperating parts ofsuch apparatus.

A further object of this invention is to provide a die of the character referred to with a retaining device capable of clamping the die in position under its own resilience.

A more specific object of this invention is to provide a device for connecting a die of the character referred to, to its mounting member by frictional engagement between a resilient stud and a cooperating internal wall in the mounting member. 7

Other objects will become apparent to those skilled in the art when the following description is read in connection with the accompanying drawing, in which:

Figure 1 is a perspective view of a marking machine of the character referred to and provided with a die and connecting device constructed in accordance with the present invention.

Figure 2 is a longitudinal sectional view taken along line 22 Figure 1 and showing the connecting device of the present invention more in detail.

Figure 3 is a perspective view of a die plate provided with connecting devices formed in accordance with the present invention.

Figure 4 is a detail sectional view of a securing device employed in accordance with the present invention.

In accordance with the present invention, the die plate of a tracing machine for sections of shoe upper material may be provided with a plurality of upstanding resilient studs and the cooperating member of the machine which takes the die plate may be provided with recesses arranged to receive the studs on the die. In accordance with the present invention the recesses referred to may be slightly smaller in at least one diameter than are the resilient studs so that when the studs are 5,: forced into the recesses, the die is clamped in position by the resilience of the studs against the interior of the recess. This arrangement enables the dies to be removed and replaced with facility and speed, and, at the same time, provides a 10. secure connection without necessitating the operation of any clamps, latches or adjusting devices.

Referring now particularly to the drawing, in Figure 1, a tracing machine of the character 15.. referredto is illustrated. Such. a machine may comprise a frame I, having a Work receiving bed 2 upon which the sections of upper material to be marked are placed in a predetermined relation to the operating parts of the machine. Such a 20 section of upper material is illustrated in position as shown at 3 upon bed 2, it being understood that suitable provision may be made for locking the section of upper. material upon the bed: 2.

Upon an elevated portion 4 of the frame I may be provided a source of ink supply such as a pad 5 and mounted for oscillation back and forth between the bed 2 and the ink supply 5 is a head 6 which, in the embodiment illustrated, is mounted 30 upon a pair of links 1 at the front thereof and a pair of links 8 at the back. In the embodiment illustrated, the links 1 and 8 are so mounted that when the head 6 is pushed rearwardly it will seat itself upon the inking pad 5 and when it is pulled 35 forwardly it will seat itself upon bed 2, as indicated in dotted lines in Figure 1. For the pmpose of oscillating the head 6 back and forth, a suitable handle such as 9 may be provided thereon or the device may be operated by other suit- 40 able actuating means.

In order to form the desired markings upon the section of upper material 3, such markings being, for instance, illustrated by the lines II, a marking die 12 provided with marking edges H0 corresponding to the desired configuration may be mounted upon the lower surface of head 6. Since the character of markings which it is desired to place upon the sections of upper material will differ with various lots of shoes, it is important that the die 12 be so connected with head 6 that although it is securely clamped thereto during operation it may be readily removed and replaced with another die when it is 55 that when they are recesses l3, the die plate will be properly positioned on the head with reference to the locating 1 the markings I! will be devices on bed 2, and properly positioned on a section of upper ma- I terial. V

' in one or more diameters.

In the embodiment illustrated, the studs I4 may be made hollow, as illustrated clearly in Figure 4, down to near their point of connection with die plate l2. In the embodiment. illustrated, the studs M are longitudinally slit, as shown at IS, in order to render the same diametrically resilient. One or more such slits may be provided in order to render the stud resilient As shown clearly in Figure 4, the studs [4 are provided with a bulged portion IS in the upper region thereof and it will be understood that such bulged portion is of a slightly greater diameter than the internal diameter of recesses l3 so that when the studs are inserted in the recesses, the stud is diametrically compressed so that atight frictional engagement isoperative to securely hold the die plate l2 in position upon head 6. It will be understood, however, that the stud may bejmade solid or non-yielding and a suitable resilient bushingprovided on the interior of recess I13 for cooperating therewith, or that instead of splitting the studs l4 they may be made sufficiently thin that they will be distorted in at least one diameter when they are inserted in recesses l3 and thus be able to accomplish the necessary l2 opposite the marking edges Iii] may,

frictional contact between to retain die plate IZYin position.

From the foregoing description it is apparent that the present invention accomplishes its ob: jects and that a die plate, and particularly a securing device therefor is provided, which permits of ready replacement of die plates, of the character described, while providing a sufficiently secure mounting for the plates during operation. Moreover, the connection between the plate l2 and head 6 is, in accordance with the present invention, effected automatically-that is to say vwithout necessitating the manipulation of any clamp, latch or adjusting device. To remove the plate !2 fromthe head 6, an instrument of any suitable type may be inserted between plate l2 and head 6 or may be inserted through the'upper open end of holes I3 to force studs l4 from within. 7 r 7 Since it is apparent that many modifications of the marking device hereinbefore described willpresent themselvesto those skilled in the art, it is .to be understood that the invention is not limited to the specific details of construction which have been hereinbefore described." Ittis to be understood, therefore, that such modifications and the use of such individual features and sub-combinations of features as do not depart the frictional surfaces from the spirit of this'invention are, although not specifically described herein, contemplated by and within the scope of the appended claim. Having thus described the invention, what is claimed is';

A machine for marking shoe uppers comprising in combination, a bed, an ink supply, a head moveable between said bed and said ink supply, said head having a plurality of sockets therein, a die having a plurality offricti'on studs relatively arranged thereon for engagement respectively with correspondingly. disposed sockets :in

the head, said studs being. longitudinally split 7 and diametrically resilient, and said studs being larger in at least one diameter than-the socket in the head. r

COURTNEY R. LIND'HOLMQ 

